Cisco Security Advisory: Cisco TelePresence ISDN Gateway D-Channel Denial of Service Vulnerability
Advisory ID: cisco-sa-20140122-isdngw
Revision 1.0
For Public Release 2014 January 22 16:00 UTC (GMT)
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Summary
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Cisco TelePresence ISDN Gateway contains a vulnerability that could allow an unauthenticated, remote attacker to
trigger the drop of the data channel (D-channel) causing all calls to be terminated and preventing users from making
new calls.
Cisco has released free software updates that address this vulnerability. No workarounds that mitigate this
vulnerability are available. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140122-isdngw